Small towns ( and larger ones) in Michigan usually lose their battles against Walmart and Meijer's. Michigan has a long history of kowtowing to big companies on the state and local levels. I suggest massive fundraising in order to acquire the best legal help available in this fight. Also look for help from non-profit advocacy groups. They often have more expertise than local people can muster.

Also, it's likely that Walmart will start courting the surrounding townships to build their store there. When your town (Hastings) sees that the tax revenues will be going to a neighboring township, they are very likely to cave in and welcome Walmart with open arms.

Another consideration is that Meijer's usually tries to build a store wherever they think Walmart is likely to go. So watch out for that too.